AirHint found the following cheapest return flights from Singapore (SIN) to Istanbul (IST) in April 2026 (see full year).

Return flights

03 Apr - 11 Apr	Gulf Air
06 Apr - 13 Apr	Gulf Air
06 Apr - 15 Apr	Gulf Air
16 Apr - 23 Apr	Gulf Air
12 Apr - 19 Apr	AirAsia
16 Apr - 26 Apr	Gulf Air
15 Apr - 25 Apr	Gulf Air
14 Apr - 25 Apr	Gulf Air
16 Apr - 24 Apr	Gulf Air
20 Apr - 26 Apr	Gulf Air
26 Apr - 04 May	Gulf Air
26 Apr - 07 May	Gulf Air
22 Apr - 20 May	Turkish Airlines	direct
22 Apr - 22 May	Turkish Airlines	direct
16 Apr - 16 May	Gulf Air
27 Apr - 03 May	Gulf Air
26 Apr - 02 May	Gulf Air
13 Apr - 13 May	Gulf Air
27 Apr - 03 May	Turkish Airlines	direct
20 Apr - 20 May	Turkish Airlines	direct

Also check the deals for one-way flights from Singapore to Istanbul in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Singapore to Istanbul in April from 410€

Return flights